Archaeozoic

[ahr-kee-uh-zoh-ik]

Archeozoic

or Ar·chae·o·zo·ic

[ahr-kee-uh-zoh-ik]Geology
adjective
  1. noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered.
noun
  1. the Archeozoic division of geologic time or the rock systems formed then.

Origin of Archeozoic

1870–75; archeo- + Greek zō(ḗ) life + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for archaeozoic

Historical Examples of archaeozoic


British Dictionary definitions for archaeozoic

Archaeozoic

esp US Archeozoic

adjective
  1. a former word for Archaean

Archeozoic

adjective
  1. a variant spelling (esp US) of Archaeozoic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

archaeozoic in Science

Archaeozoic

[är′kē-ə-zōĭk]
  1. Another spelling of Archeozoic.

Archeozoic

  1. See Archean.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.